Patents
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Patents for C07C 253 - Preparation of carboxylic acid nitriles (14,307)
11/1999
11/11/1999DE19912243A1 Production of chloromalonic acid dinitrile useful as an agrochemical and pharmaceutical intermediate
11/11/1999CA2329893A1 Process for producing 6-cyanomethyl-1,3-dioxane-4-acetic acid derivatives
11/11/1999CA2329316A1 Main-group metal-based asymmetric catalysts and applications thereof
11/09/1999US5981794 Reacting a beta-benzoylacrylic acid derivative with a 1-arylethylamine derivative
11/09/1999US5981790 Method for partially hydrogenating dinitriles to aminonitriles
11/09/1999US5981789 Chlorodenitrating aromatic compounds using less chlorinating agent and lower temperatures, then recycling the product mixture to increase the yield
11/09/1999US5981772 Hydrocyanation of diolefins and isomerization of nonconjugated 2-alkyl-3-monoalkenenitriles
11/03/1999EP0953564A1 Process for preparing 2-cyanobiphenyl compound
11/02/1999US5977397 Removal of an impurity from a mixture with a codistillant
11/02/1999US5977396 Method for recovering acrylonitrile contained in a gas
11/02/1999US5977290 Basic catalysts for the aldol reaction
11/02/1999US5977123 Oximether and acrylic acid derivatives and their use as fungicides
10/1999
10/28/1999WO1999054288A1 Processes for preparing pesticidal intermediates
10/28/1999WO1999054287A1 Improved process for the manufacture of n-(1-cyanoalkyl)-2-phenoxypropionamide derivatives
10/28/1999WO1999054285A1 Method for purifying aliphatic aminonitriles
10/28/1999WO1999054032A1 Photochemical and thermochemical solar syntheses using flat-bed solar collectors/solar reactors
10/28/1999CA2328767A1 Method for purifying aliphatic aminonitriles
10/28/1999CA2328723A1 Improved process for the manufacture of n-(1-cyanoalkyl)-2-phenoxypropionamide derivatives
10/28/1999CA2328160A1 Photochemical and thermochemical solar syntheses using flat-bed solar collectors/solar reactors
10/27/1999EP0952145A1 Process for preparing pesticidal intermediates
10/27/1999EP0952144A1 Processes for preparing pesticidal intermediates
10/27/1999EP0677040B1 Process and intermediate products for preparing hydroxylamine-ethers and their salts
10/27/1999CN1232819A Process for preparation of malononitrile
10/27/1999CN1232818A Process for preparation of malononitrile
10/26/1999US5973186 In fluidized bed reactor containing a catalyst comprising oxides of molybdenum, vanadium, niobium and tellurium or antimony
10/26/1999US5972833 Batch processing; drying, heating, roasting
10/21/1999WO1999052632A1 Hydrocyanation of olefins and isomerization of nonconjugated 2-alkyl-3-monoalkenenitriles
10/21/1999DE19844037A1 Performing photochemical and thermochemical syntheses, especially of fragrances or steroids.
10/21/1999CA2328866A1 Hydrocyanation of olefins and isomerization of nonconjugated 2-alkyl-3-monoalkenenitriles
10/20/1999CN1232449A Process for preparing 2-phenyl-3-naphthylpropionic acid derivs.
10/19/1999US5969175 Purification of nitrile
10/14/1999WO1999051609A1 Method for producing grignard compounds
10/14/1999WO1999051568A2 A CONVERGENT SYNTHESIS OF α-ARYL-β-KETONITRILES
10/13/1999EP0948482A2 Method for producing trifluoroacetoacetic acid anilides
10/13/1999CN1231282A Improved purification and recovery of acetonitrile
10/13/1999CN1231281A Molydenum promoted vanadium-antimony-oxide based catalyst for selective paraffin ammoxidation
10/13/1999CN1045591C Method for hydrocyanation of unsatured nitrile into dinitrile
10/12/1999US5965766 Nucleophilic substitution reactions on triflyl-substitued benzenes carried out in the presence of catalysts; hydroxy-,alkanoyloxy-, formyloxy-, alkoxybenzoic acids as well as hydroxy- and alkoxybenzonitriles
10/12/1999US5965765 Process for producing α,β-unsaturated nitrile
10/12/1999US5965764 Dehydrating amide in presence of unreacted carboxylic acid having same radical as amide; by-product inhibition
10/12/1999US5964919 Method of storing active zero valent zinc metal
10/07/1999WO1999050233A1 Process for the manufacture of cyclopropanecarbonitrile
10/06/1999EP0946522A1 Method for producing 1-phenyl-uracil derivatives
10/06/1999EP0746539B1 Process for the preparation of cinnamic acid derivatives
10/06/1999CN1230537A Preparation process of 2,6-dichloro benzonitrile
10/06/1999CN1045445C Preparation of triarylborane
10/05/1999US5962739 Reacting aminophenyl alkanol with dialkyl sulfate in aqueous solution
10/05/1999US5962492 Antiasthma agents; antiinflammatory agents
10/05/1999US5962483 Antiasthma agents; antiinflammatory agents
10/05/1999US5961945 Method of producing cyano compounds by ammoxidation
10/05/1999US5961788 Sequential distillation process for removing tetrahydroazepine from aminocapronitrile and/or hexamethylenediamine
09/1999
09/30/1999WO1999048872A2 Method for separating an azepine derivative from a mixture containing an amine and an azepine derivative
09/30/1999CA2323617A1 Method for separating an azepine derivative from a mixture containing an amine and an azepine derivative
09/29/1999EP0945432A1 Molybdenum promoted vanadium-antimony-oxide based catalyst for selective paraffin ammoxidation
09/29/1999EP0944585A1 Monoolefinic c 5?-mononitriles, method for the production and the use thereof
09/29/1999CN1230172A Catalysts suitable for preparing aliphatic alpha-, omega-aminonitriles by partial hydrogenation of aliphatic dinitriles
09/28/1999US5959136 Process for the preparation of malononitrile
09/28/1999US5959135 Hydrocyanation processes and multidentate phosphite ligand and nickel catalyst compositions thereof
09/28/1999US5959134 Improved recovery of the reactor effluent of an ammoxidation reaction of propylene or isobutylene for the production of acrylonitrile or methacrylonitrile
09/28/1999US5959099 Protecting group for synthesizing oligonucleotide analogs
09/28/1999CA2004962C Manufacture of 5-cyanovaleric acid and its esters using cyclic cosolvents
09/23/1999WO1999047492A1 Aminonitrile production
09/23/1999WO1999047489A1 A process for the manufacture of (2s,2'r,3'r)-2-(2,3-dicarboxylcyclopropyl)-glycine
09/23/1999DE19812427A1 Separation of azepine derivative for purification of amine, especially polyamide precursor
09/23/1999CA2323203A1 A process for the manufacture of (2s,2'r,3'r)-2-(2,3-dicarboxylcyclopropyl)-glycine
09/22/1999EP0943605A2 Process for the preparation of malonitrile
09/22/1999EP0943604A1 Process for the preparation of malononitrile
09/16/1999WO1999046271A1 Substituted aminomethylphosphines as ligands for catalysts
09/16/1999WO1999046044A1 Catalyst comprising a complex of a metal of subgroup viii, on the basis of a phosphonite ligand and method for hydroformylation
09/16/1999DE19810794A1 Catalyst useful for hydroformylation of ethylenically unsaturated compounds to produce aldehydes
09/15/1999EP0941990A2 Process for the preparation of azamethines and azamethines obtained thereby
09/15/1999EP0941984A2 Method of producing a methyl methacrylate
09/14/1999US5952262 Reacting a mixture of an aromatic or heteroaromatic hydrocarbon with ammonia and oxygen in the gas phase at high temperature in the presence of a novel supported catalyst containing vanadium and antimony oxides in specific weights
09/10/1999WO1999044984A1 Iron-based catalyst for hydrogenating alpha-, omega-dinitriles
09/10/1999WO1999044983A1 Method for producing aliphatic alpha-, omega-diamines
09/10/1999WO1999044982A2 Method for hydrogenating aliphatic alpha-, omega-dinitriles
09/10/1999CA2322530A1 Method for hydrogenating aliphatic alpha-, omega-dinitriles
09/09/1999DE19809688A1 Verfahren zur Herstellung von aliphatischen alpha-, omega-Diaminen A process for the preparation of aliphatic alpha, omega-diamines
09/09/1999DE19809687A1 Hydrierkatalysator Hydrogenation
09/09/1999DE19809686A1 Verfahren zur Hydrierung von aliphatischen alpha, omega-Dinitrilen A process for hydrogenation of aliphatic alpha, omega-dinitriles
09/07/1999CA2091864C Process for producing halogenophenoxyfatty acid derivatives by selective halogenation and halogenophenoxyfatty acid derivatives
09/02/1999WO1999033788A3 Method for producing aromatic bromomethyl biphenyl compounds
09/01/1999EP0938469A1 Process for purifying acrylonitrile
09/01/1999CN1227541A Method for purifying lactams
09/01/1999CN1227539A Process for preparing 6-aminocapronitrile
08/1999
08/31/1999CA2175781C Process for the production of petrochemicals
08/25/1999EP0937707A2 Improved purification and recovery of acetonitrile
08/25/1999EP0937023A1 Process for the preparation of an aldehyde
08/25/1999EP0937022A1 Process to prepare a linear aldehyde
08/25/1999CN1226885A Process for producing amines and amino nitriles
08/25/1999CN1226551A 5-chloro-2,6-difluoro 1,3-isophthalonitrile-4-(alkyl) amine compounds and production thereof
08/24/1999US5942640 Process for the manufacture of N-(1-cyanoalkyl)-2-phenoxypropionamide derivatives
08/19/1999WO1999041012A1 A solid catalyst with core-shell catalytic phase and a method of preparation thereof
08/18/1999EP0936215A1 Process for preparing 2-phenyl-3-naphthylpropionic acid derivatives
08/18/1999CN1225921A Waste minimization and product recovery process
08/11/1999EP0934925A1 Process for the preparation of beta-alkoxy nitriles
08/11/1999EP0934256A1 Process for the production of cyanocinnamamides
08/11/1999EP0934236A1 Process for the preparation of substituted aromatic compounds
08/11/1999CN1225628A Process for preparing caprolactam from 6-aminocapronitrile
08/05/1999DE19804839A1 Catalyst for the ammoxidation of aromatics, especially methyl-aromatics or methyl-heteroaromatics to nitrile compounds
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